@Joel: Well yeah no duh, but it was appropriated into a new artistic expression. This wasn't some video that only include a still image of an album cover with the song playing. It had it's own, clear merits. Furthermore, the song played an important role in the video (the fighting was choreographed to match the beat in some sections... very well I might add), so it was not a non-consequential aspect of the video. Lastly, the audio of this video included both the song and the gameplay audio overlapped, making it so that ripping the audio straight from this video DID NOT give you the original Daft Punk song.

All in all, it's clearly a legit fair use. Someone at youtube just flagged it and it got removed before anyone gave it a real look through.

@Roby: If putting a snippet of a copyrighted song in a piece of video counted as fair use, movies wouldn't have to pay royalties. Is what the record companies are doing retarded? Yes. Is it illegal? No.

Hi there,first congratulations ! You did a very good job.Any suggestions :- could you make a "Tron Fortress" Steam group ? Would be nice :).- could you tell people how to help you in this crazy project ?

As well as the HUD display. Will there be a way to have the ribbons of light and when u look in first person your hands glow. Also if the colors were hard to identify quick enough between enemy and foe then the blue background could be white instead of blue

@Steve the Pocket: No. The law is based around 4 criteria. One of which is profit. Movies need to pay loyalties because they are making a profit by the use of the music. But nothing is being sold here, so it's still fair use.